Skyrmion lattice hosted in synthetic antiferromagnets and helix modes
arXiv:2209.05893 · doi:10.1103/PhysRevB.106.104424
Abstract
Thin ferromagnetic films can possess unconventional magnetic properties, opening a new road for using them in spintronic technologies. In the present work exploiting three different methods, we comprehensively analyze phason excitations of a skyrmion lattice in synthetic antiferromagnets. To analyze phason excitations of the skyrmion lattice, we have constructed an analytical model based on three coupled helices and found a linear gapless mode. Micromagnetic simulations also support this result. Moreover, a similar result has been achieved within the rigid skyrmion lattice model based on the coupled Thiele's equations, when the coupling between skyrmions in different layers of the synthetic antiferromagnetic is comparable to or larger than the intralayer coupling. In addition, we also consider the orbital angular momentum and spin pumping current associated with phason excitations. Due to the gapless excitations in the case of skyrmion lattice, the pumping current is nonzero for the arbitrary frequency of pumping microwaves. In the case of individual skyrmions, no current is pumped when microwave frequency is inside the gap of the spectrum of individual skyrmions.
arXiv comment12 pages, 8 figures, accepted in Phys. Rev. B
References in corpus (40)
- Skyrmion Lattice in a Chiral Magnet
- Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
- Optical skyrmions in evanescent electromagnetic fields
- Spin-Wave Modes and Their Intense Excitation Effects in Skyrmion Crystals
- Magnon-skyrmion scattering in chiral magnets
- Chiral skyrmions in cubic helimagnet films: the role of uniaxial anisotropy
- Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
- Bogomol'nyi solitons in a gauged sigma model
- Absence of spontaneous magnetic order at non-zero temperature in one- and two-dimensional Heisenberg and XY systems with long-range interactions
- Path to collapse for an isolated Néel skyrmion
- Meron, skyrmion, and vortex crystals in centrosymmetric tetragonal magnets
- Spin waves in a skyrmion crystal
- Propagating spin excitations along skyrmion strings
- Magnetic texture-induced thermal Hall effects
- Internal modes of a skyrmion in the ferromagnetic background in chiral magnets
- Origin of the thickness-dependent low-temperature enhancement of spin Seebeck effect in YIG films
- Multiplet of skyrmion states on a curvilinear defect: skyrmion lattices as a ground state
- Spin eigen-excitations of the magnetic skyrmion and problem of the effective mass
- Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion
- Twisted magnon as a magnetic tweezer
- Skyrmion Dynamics in Multiferroic Insulator
- Bimeron Clusters in Chiral Antiferromagnets
- Magnetic field control of the spin Seebeck effect
- Collective dynamical skyrmions excitations in magnonic crystal
- Quantum Dynamics of Skyrmions in Chiral Magnets
- Magnetic Skyrmions at Critical Coupling
- Angular and Linear Momentum of Excited Ferromagnets
- Face centered cubic and hexagonal close packed skyrmion crystals in centro-symmetric magnets
- Quantum Collapse of a Magnetic Skyrmion
- First-principles prediction of sub-10 nm skyrmions in Pd/Fe bilayers on Rh(111)
- Isospinning baby Skyrmion solutions
- Gauged Baby Skyrme Model with Chern-Simons term
- Phasons and excitations in skyrmion lattice
- Topological dynamics and current-induced motion in a skyrmion lattice
- Ordered Phases of Itinerant Dzyaloshinsky-Moriya Magnets and Their Electronic Properties
- Non-relativistic Nambu-Goldstone modes propagating along a skyrmion line
- Broken planar Skyrmions -- statics and dynamics
- Stabilization of the skyrmion crystal phase in thin-film antiferromagnets
- Triple helix vs. skyrmion lattice in two-dimensional non-centrosymmetric magnets
- Spin waves in skyrmionic structures with various topological charges